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Type specimen, dorsal
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Type specimen, lateral
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Type specimen, frontal
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Type specimen, lateral
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Type specimen, posterior
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Type specimen, frontal
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Type specimen, dorsal
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Monarthrum difficile specimen, dorsal view
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Monarthrum difficile specimen, lateral view
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Monarthrum difficile specimen, frontal view
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Monarthrum difficile specimen, posterior view
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Type specimen, lateral
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Type specimen, frontal
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Type specimen, posterior
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Type specimen, dorsal
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Type specimen, dorsal
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Type specimen, posterior
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Type specimen, frontal
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Type specimen, lateral
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Type specimen, lateral
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Monarthrum pseudoparvum specimen, lateral view
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Monarthrum pseudoparvum specimen, posterior view
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Type specimen, frontal
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Monarthrum pseudoparvum specimen, frontal view